Koelle, H. H. (2002). Prospects of a settlement on the moon: Development, operation, cost, benefits. Technical Univ., Inst. of Aeronautics and Astronautics.
Chicago-Zitierstil (17. Ausg.)Koelle, Heinz Hermann. Prospects of a Settlement on the Moon: Development, Operation, Cost, Benefits. Berlin: Technical Univ., Inst. of Aeronautics and Astronautics, 2002.
MLA-Zitierstil (9. Ausg.)Koelle, Heinz Hermann. Prospects of a Settlement on the Moon: Development, Operation, Cost, Benefits. Technical Univ., Inst. of Aeronautics and Astronautics, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.